PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 220

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

Semiconductor Group
5.2.12
The Switch Status Register (SWST) selects the switching directions of the processor
interface (PI).
Reset value: 00
WT
B1
B2
D
CI
MON
Watchdog Timer
1=
0=
B1-channel Processing
1=
0=
B2-channel Processing
1=
0=
D-channel Processing
1=
0=
C/I-channel Processing
1=
0=
Monitor-channel Processing
1=
0=
WT
SWST-Register
Write
7
H
Enables the watchdog timer (see "Watchdog Timer", page 93)
Disables the watchdog timer
Enables the microprocessor to access B1-channel data between
IOM
Disables the function described above
Enables the microprocessor to access B2-channel data between
IOM
Disables the function described above
Enables the microprocessor to access D-channel data between
IOM
Disables the function described above
Enables the microprocessor to access C/I-commands and indications
between IOM
Disables the function described above
Enables the microprocessor to access Monitor-channel messages at
IOM
Disables the function described above
B1
6
®
®
®
®
-2 and the transceiver core
-2 and the transceiver core
-2 and transceiver core
-2 and at the transceiver core
Address F
B2
5
®
-2 and transceiver core
D
4
H
220
CI
3
MON
2
BS
1
Register Description
Data Sheet 01.99
SGL
0
PEB 2091
PEF 2091